The new Inov8 Bare-X 180 works hard to simulate barefoot running. There is a zero heel to toe differential. The upper is made entirely of breathable mesh. The outsole is made from a state of the art exceptionally durable compound developed by 3M with a special coating for enhanced wet traction that will last for 600 miles. The fit is designed to prevent internal motion during climbs or descents. With all of this in an ultra light shoe, you can’t get any closer to running barefoot without risking injury from road hazards.